[HOT] Trunks in Highway Tag Africa

Enock Seth Nyamador enockseth at gmail.com
Wed Jan 27 20:32:28 UTC 2021


In Ghana, there exist trunk roads referred to as National (N#) see [1]

1. https://en.wikipedia.org/wiki/Ghana_Road_Network#National_routes

Am Mi., 27. Jan. 2021 um 20:14 Uhr schrieb Ralf Bernhardt <raabee at gmx.de>:

> So the East African tagging guidelines are matching  Tanzania's Ministry
> of Transport designations but not Kenya's official designation. That's
> interesting
>
> Am 27.01.21 um 18:37 schrieb Vao Matua:
>
> Fernando,
>
> Are there some specific locations where you feel the highway tagging is
> not correct?
> In Tanzania over the last 4 years there has been a great deal of work to
> get the transportation network to an appropriate tagging scheme including
> trunk roads to match the Tanzania Ministry of Transport designations.
> Hopefully this effort won't be used to reverse the progress made in east
> Africa.
>
> Regards,
>
> Emmor
>
> On Mon, Jan 25, 2021 at 5:58 AM Fernando Trebien <
> fernando.trebien at gmail.com> wrote:
>
>> Hi!
>>
>> The current definition of highway=trunk for Africa [1] and East Africa
>> [2] appears to reflect mapping practices in some highly developed
>> countries that are not common in most developing countries. The two
>> points that I find very restrictive:
>>
>> 1. Restricted to motorised vehicles: not mandatory even in many
>> developed countries [3]
>> 2. Motorway-like layout with multiple lanes: does this include single
>> carriageways with 2 lanes, 1 lane per direction?
>>
>> In the English wiki, the definition of highway=trunk is less
>> restrictive, and so are many of its translations. In addition, many
>> highways mapped as highway=trunk in Africa (and East Africa) do not
>> meet these requirements and apparently did not at the time [4] of the
>> edit.
>>
>> Sometimes trunk roads may not even be paved. Examples include the
>> A-360 [5] and P-504 [6] routes in the Russian Far East and the
>> Trans-Amazonian Highway (BR-230) [7] in the North Region of Brazil.
>> Iceland's Ring Road [8] was also unpaved until recently in some parts.
>>
>> So, I would like to propose changing the definition in [1] to
>> something like what the English wiki says: "The most important roads
>> in a country's system that are not motorways." Possibly adding that
>> these are generally the main routes between very large cities. What do
>> you think?
>>
>> [1] https://wiki.openstreetmap.org/wiki/Highway_Tag_Africa
>> [2] https://wiki.openstreetmap.org/wiki/East_Africa_Tagging_Guidelines
>> [3]
>> https://wiki.openstreetmap.org/wiki/OSM_tags_for_routing/Access_restrictions
>> [4]
>> https://wiki.openstreetmap.org/w/index.php?title=Highway_Tag_Africa&type=revision&diff=1337238&oldid=1337236
>> [5] https://www.openstreetmap.org/?mlat=58.53671&mlon=125.38264
>> [6] https://www.openstreetmap.org/?mlat=64.57219&mlon=142.27424
>> [7] https://www.openstreetmap.org/?mlat=-3.68545&mlon=-53.56702
>> [8] https://www.openstreetmap.org/?mlat=64.78732&mlon=-14.44138
>>
>> --
>> Fernando Trebien
>>
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>>
>
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-- 
-Enock
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